The Tomahawk Model SPT55 Repeating Trap is used with an E50 - 5" x 5" excluder to create an SP55 Squirrel Pack. SPT55 repeating traps slide over excluders / one way doors and have trap doors at each end to allow you to capture animals both leaving and entering the den. One trap door is recessed so that the trap can easily be attached over the excluder / one way door. This trap measures 36L x 5.5W x 5.5H" and is constructed of 1/2" x 1" - 14 gauge wire mesh.